Gunnison National Park
The Gunnison thunders down the steepest mountain descent of any river in the United States through one of the most spectacular and deepest canyons in the country. The less-trafficked North Rim has a great campground, at the lip of a nearly 2,000-foot plunge into the gorge.
Cool Fact: Stack the Empire State Building atop the Willis Tower (a.k.a. Sears Tower) and you’d still be two stories short of the canyon rim at Warner Point, 2,722 feet above the river.
Don’t Miss: Rafting the Gunny itself—a raging river of Class III to IV rapids sluicing though a canyon that’s often only 40 feet wide between mighty rock walls rising hundreds of feet—in the adjacent Gunnison Gorge National Conservation Area.